I am new to extjs. I have created an extjs 6.0.2 app through sencha cmd. I ran the command sencha app build classic.everything went well and the app was created successfully.but when I ran the command sencha ant sass, I got the following error in the console
[ERR] Failed to resolve dependency Ext.chart.LegendBase for file Ext.chart.Legend
[ERR]
[ERR] BUILD FAILED
[ERR] com.sencha.exceptions.ExNotFound: Unknown definition for dependency : Ext.chart.LegendBase
[ERR]
[ERR] Total time: 3 seconds
[ERR] The following error occurred while executing this line:
E:\Workspace\Zscore\zscore\.sencha\app\init-impl.xml:382: com.sencha.exceptions.ExNotFound: Unknown definition for dependency : Ext.chart.LegendBase
what might be the issue?